package com.mmall.common;

import org.codehaus.jackson.annotate.JsonIgnore;
import org.codehaus.jackson.map.annotate.JsonSerialize;

import java.io.Serializable;

/**
 * 服务响应通用类
 * @param <T>
 */
@JsonSerialize(include = JsonSerialize.Inclusion.NON_NULL)
//保证在json序列化过程中,如果结果是null的对象，key也会消失
public class ServerResponse<T> implements Serializable{

    private int status;
    private String msg;
    private T data;

    private ServerResponse(int status) {
        this.status = status;
    }

    private ServerResponse(int status, String msg) {
        this.status = status;
        this.msg = msg;
    }

    private ServerResponse(int status, T data) {
        this.status = status;
        this.data = data;
    }

    private ServerResponse(int status, String msg, T data) {
        this.status = status;
        this.msg = msg;
        this.data = data;
    }

    @JsonIgnore
    //使之不在json序列化结果当中boolean
    public boolean isSuccess(){

        return this.status== ResponseCode.SUCCESS.getCode();
    }

    public int getStatus() {
        return status;
    }

    public String getMsg() {
        return msg;
    }

    public T getData() {
        return data;
    }

    public static <T> ServerResponse<T> createBySuccess(){

        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode());
    }

    public static <T> ServerResponse<T> createBySuccessMessage(String msg){

        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(),msg);
    }

    public static <T> ServerResponse<T> createBySuccess(T data){

        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(),data);
    }

    public static <T> ServerResponse<T> createBySuccess(String msg,T data){

        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(),msg,data);
    }

    public static <T> ServerResponse<T> createByError(){

        return new ServerResponse<T>(ResponseCode.ERROR.getCode(),ResponseCode.ERROR.getDesc());
    }

    public static <T> ServerResponse<T> createByErrorMessage(String errMsg){

        return new ServerResponse<T>(ResponseCode.ERROR.getCode(),errMsg);
    }

    public static <T> ServerResponse<T> createByErrorMessage(int errorCode,String errMsg){

        return new ServerResponse<T>(errorCode,errMsg);
    }
}
